Cutting tool sharpener



FIG. 1 is an isometric view of my design.

FIG. 2 is a front view of the design.

FIG. 3 is a rear view of the design.

FIG. 4 is a right side view of the design.

FIG. 5 is a left side view of the design.

FIG. 6 is a top plan view of the design.

FIG. 7 is a bottom plan view of the design; and,

FIG. 8 is another isometric view of the design.

The broken lines in these drawings serve to illustrate the environment in which the claimed design is associated. The broken lines form no part of the claimed design. 

CLAIM The ornamental design for a cutting tool sharpener, as shown and described. 